aloisiite

noun

alo·​isi·​ite

ˌaləˈwiˌshīt,

-wis(h)ēˌīt

plural -s

: a mineral consisting of hydrous subsilicate of calcium, ferrous iron, magnesium, and sodium occurring in amorphous brown-to-violet masses

Word History

Etymology

Prince Luigi (Aloisius) Amedeo †1933 duke of the Abruzzi + English -ite

First Known Use

1909, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now